Given binary number is 101110.

To convert binary number to decimal, multiply each digit of the binary number by the corresponding power of two.

=> 1×25 + 0×24 + 1×23 + 1×22 + 1×21 + 0×20

= 32 + 0 + 8 + 4 + 2 + 0

= 46

Hence the decimal equivalent of binary number 101110 is 46.

Source: Lucent’s Computer